I found several inexpensive phones on Ebay that have GPS and I can develop using. Then I ran into the question: If I plan on not purchasing a service for the phone can I still access the GPS functions to get location?

Basically I just need a phone to develop and test my application sheerly from the standpointo of accessing the GPS functions and getting the coordinates. Once that works I'll worry about getting service and build my application to make use of that information. Anyone dealt with this?

My assumption is no, based on:
which is a good reference for LBS and Nokia phones.